Multi-color writing transfer sheet



,United States Patent 2,916,165 MULTI-COLOR WRITING TRANSFER SHEET f Joseph zalkind, z2 w, Y'zzmi st., New York, NY.

Filed Jan. s1, 195s, ser. No. 712,509 z claims. (ci. 117-15) This invention relates to writing sheets and more particularly to writing sheets for related or multiple business forms, i.e. checks or books wherein it is desirable to eliminate carbon paper for making transfer copies.

It is conventional to eliminate carbon paper between writing sheets by coating the back of the sheets with various kinds of inks so that written material will elfect van inked transfer from the back of one sheet to the front of an underlying sheet. Inks are known and used for effecting this purpose, it being generally understood that the best type of ink for transfer coatings is a wax type and is applied in heated condition. However, for a less expensive type of transfer coating, cold carbon inks are likewise used in ordinary printing presses. The latter inks are applied cold and although adequate for many purposes they are generally inferior to the hot applied wax inks in that the markings transferred do not have the same transfer qualities effected by a hot coated wax ink nor do they retain the same intensity of pigmentation.

In instances where it is desired to apply two or more colors for transfer markings, the hot wax coating method is very expensive. Fur-ther, two colors in cold transfer ink is less effective since the only cold transfer ink which performs with a reasonable degree of clear marking is carbon black ink. However, as noted above, even carbon black printing ink does not have the full, rich intensity of color aiforded by a wax ink when applied hot.

I have discovered that it is possible to impart the quality of a hot coated wax ink to a cold coated ink in a novel and economical manner to be hereinafter described.

My invention contemplates preparation of single or multi-colored transfer coatings for writing sheets wherein one color is applied as a hot colated wax ink in specified and selected areas, wherever desired for the particular conditions required, to the reverse side of a writing sheet. Such hot wax ink could be white or colorless in instances where only an overlay color is to be transferred, or it can be a colored hot wax if transfer of that color is also desired.

Thus, wax coated writing sheets may then be stored until needed for use to be made up into various types of business books, such as sales books, record books, etc. The coated sheets, taken from storage, may be run through an ordinary printing press and a cold carbon black ink `applied on the wax coating wherever desired, and extending into any desired portions of the wax ink coating. Thus, if the Wax coating be red and the cold coating be black, such a sheet, when Written on, will transfer red through the unaffected areas of the red coating, and will transmit black through the areas having a black cold ink coating, and will also transmit black through the combined coating, orl substantially black. However, the substantially black lines yielded by the combined coating having a rich, full-bodied waxy texture which for all practical purposes appears to be the result of a hot applied black wax coating, even though in fact it is not. In other words, the wax of the red coating, instead of appearing red as would be expected particularly since it is coatings, will be black, while the length g will be red.

- machines to store paper having designated areas printed lprinted below the black coating andH therefore would ordinarily be expected to come outaon topv of any transferred black coating, loses practically all of its distinctive red color and mingles with the cold applied black ink to effect an almost pure black line. In any event, the

result is sufliciently black to an extent that only exv.tremely minute examination would indicate any red imof cold printing ink of another color superimposed over a portion of the previously printed area..

Thus referring to Fig. 1, a sheet of writing paper 10 is disclosed having an area 14 which will be understood to be printed in a hot wax red ink. In Fig. 2 a strip of cold carbon black ink 18 has been printed on the sheet, a portion of which will be seen to overlay the red area 12. If the sheet 10 is now superimposed on another sheet of writing paper with the printed areas thereagainst and a pencil yline be drawn on the obverse face of the sheet 10 in the direction of the arrow A, a transfer of the drawn line will occur on the lower sheet of paper wherein the section designated as a will come out as black. The section designated as b will come out as black but with a heavy, waxy consistency, while the section designated as c will come out similar to a. If now a line be drawn in the direction of the arrow B, that is from the top to the bottom edge, in that sequence, the length of line d will have no transfer writing at all, the length e will be red, the length f, that is passing through the superimposed The advantages of my invention are obvious to persons working in the printing industry. It enables a printer who ordinarily would not have hot ink printing in one color in hot ink, which stock of paper is purchased from firms specializing in this method. When it is desired to utilize the paper stock it can be run through a conventional press and ordinary cold inks applied in any combination with the previously hot coated areas to effect a two-color transfer surface, the colors being disposed wherever desired. Further, it would be possible for a printer to stock hot wax coated paper, the reverse sides being completely coated in some light color and which could subsequently be cold coated completely in some darker color and thus achieve the effect of a hot applied wax ink, the transferred Writing being of the darker color but having the rich and heavy appearance of a waxed ink of that color, even though such ink was actually applied cold in a conventional press.

As indicated above, my invention would effect single or multi-color choice of cold transfer ink with a hot wax effect by using a colorless hot wax coating. Thus, a printer could stock colorless coated paper and print selected areas in selected colors with cold inks on the wax coating. Such procedure would give the rich effect of a hot wax transfer coating in any desired number of colors at very cheap cost compared to the cost involved were separate colored hot wax coatings to be applied initially. Likewise, Where duplicate sheets are white, a white wax ink on the original would transfer invisibly thereto, but would transfer to colored duplicate sheets. Thus, white coated sheets could be stored in readiness for various types of jobs where it might, or might not, be desired to transfer writing from the wax coated area.

Various modes of use of my invention are possible and within the skill of persons working in the art. For example, my invention is not necessarily limited to use of a cold carbon ink as the overlay on the hot wax coating, but other types of ink are usable. While I believe that a singularly effective process involves the use of a cold ink of dark color printed over a hot ink of lighter color, I do not believe that my invention is necessarily limited to sequence of printing, and accordingly I do not Seek to be limited to the precise illustration herein given except as set forth in the appended claims.

I claim:

1. A multi-color writing transfer sheet having a writing surface; transfer coatings on the opposite surface; the first of said coatings being of ahot Wax color pigmented transfer ink and substantially covering said entire opposite surface; the other of said coatings being of a cold ink superimposed in a predetermined smaller area on said first coating and being of a contrasting, darker color; whereby writing on the writing surface of said sheet with 4 a stylus type of writing instrument will cause transfer of said coatings in both areas of the respective colors under the pressure of said stylus instrument.

2. A transfer sheet as set forth in claim l, wherein said hot wax transfer ink is pigmented white in color.

References Cited in the file of this patent UNITED STATES PATENTS 1,002,058 Hano Aug. 29, 1911 1,546,747 Pembroke July 2l, 1925 2,188,590 Bjorksten Jan. 30, 1940 2,299,014 Foster Oct. 13, 1942 2,606,775 Newman Aug. 12, 1952 2,862,832 Shepherd Dec. 2, 1958 FOREIGN PATENTS 393,904 Great Britain June 15, 1933 

1. A MULTI-COLOR WRITING TRANSFER SHEET HAVING A WRITING SURFACE, TRANSFER COATINGS ON THE OPPOSITE SURFACE, THE FIRST AND SAID COATINGS BEING OF A HOT WAX COLOR PIGMENTED TRANSFER INK AND SUBSTANTIALLY COVERING SAID ENTIRE OPPOSITE SURFACE, THE OTHER OF SAID COATINGS BEING OF A COLD INK SUPERIMPOSED IN A PREDETERMINED SMALLER AREA ON SAID FIRST COATING AND BEING OF A CONTRASTING, DARKER COLOR, WHEREBY WRITING ON THE WRITING SURFACE OF SAID SHEET WITH A STYLUS TYPE OR WRITING INSTRUMENT WILL CAUSE TRANSFER OF SAID COATINGS IN BOTH AREAS OF THE RESPECTIVE COLORS UNDER THE PRESSURE OF SAID STYLUS INSTRUMENT. 